2018403971 has 2 divisors, whose sum is σ = 2018403972. Its totient is φ = 2018403970.

The previous prime is 2018403949. The next prime is 2018404007. The reversal of 2018403971 is 1793048102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2018403971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2018403901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009201985 + 1009201986.

It is an arithmetic number, because the mean of its divisors is an integer number (1009201986).

Almost surely, 2^2018403971 is an apocalyptic number.

2018403971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018403971 is an equidigital number, since it uses as much as digits as its factorization.

2018403971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2018403971 is about 44926.6510102856. The cubic root of 2018403971 is about 1263.7738478973.

The spelling of 2018403971 in words is "two billion, eighteen million, four hundred three thousand, nine hundred seventy-one".